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BUG: Avoid ValueError when serializing lists/arrays in BigQuery tool #381

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Merged
merged 2 commits into from
Oct 6, 2025
Merged

BUG: Avoid ValueError when serializing lists/arrays in BigQuery tool #381

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c7d8667
BUG: Avoid ValueError when serializing lists/arrays in BigQuery tool
manikrishna-m Sep 18, 2025
cf11e36
Merge branch 'main' into fix/serialize-array-valueerror
mstyer-google Oct 6, 2025
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6 changes: 3 additions & 3 deletions python/agents/data-science/data_science/sub_agents/bigquery/tools.py
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,9 @@

def _serialize_value_for_sql(value):
"""Serializes a Python value from a pandas DataFrame into a BigQuery SQL literal."""
if isinstance(value, (list, np.ndarray)):
# Format arrays.
return f"[{', '.join(_serialize_value_for_sql(v) for v in value)}]"
if pd.isna(value):
return "NULL"
if isinstance(value, str):
Expand All @@ -52,9 +55,6 @@ def _serialize_value_for_sql(value):
if isinstance(value, (datetime.datetime, datetime.date, pd.Timestamp)):
# Timestamps and datetimes need to be quoted.
return f"'{value}'"
if isinstance(value, (list, np.ndarray)):
# Format arrays.
return f"[{', '.join(_serialize_value_for_sql(v) for v in value)}]"
if isinstance(value, dict):
# For STRUCT, BQ expects ('val1', 'val2', ...).
# The values() order from the dataframe should match the column order.
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